The Bear River travels a 500-mile course from its headwaters in Utah’s Uinta Mountains through Wyoming and Idaho, eventually terminating its horseshoe-shaped route in Utah’s Great Salt Lake, the largest inland sea in the Western Hemisphere.

This is a plan to prevent zebra mussels and other aquatic nuisance species from spreading westward. This document includes background on the issue, including the current and potential impacts, ecological, economic and otherwise, the spread of these...

This is a guide to altricial passerines. It has an explanation of variables used for aging birds and an explanation of methodology employed, and provides information obtained while recording the early aging of the Dusky Flycatcher, the Carolina...

This is a preliminary biological assessment of Kirwin National Wildlife Refuge. Stimulation for the report was based on the concept that future decisions related to the biological portion of the Comprehensive Conservation Plan will be based on the...

The Shorebird Sister Schools Program presents an activity that explores the impacts of the Deepwater Horizon
Gulf Oil Spill on coastal birds and the work of many dedicated professionals helping in species recovery, with a
focus on career...

Tidal marshes of the United States cover about 13,000 square miles, approximately the combined area of Connecticut and Massachusetts. From a global perspective, marshes form a narrow fringe of intertidal flats along ocean coasts. They are vegetated...

The U.S. Fish and Wildlife Service is establishing a conservation area for the Bear River watershed in Idaho, Utah, and Wyoming. The Bear River Water-shed Conservation Area project will work with private landowners to establish up to 920,000 acres...

In 1869, John Wesley Powell led a small party down the Green and Colorado Rivers in a bold attempt to explore the Grand Canyon for the first time. After their monumental expedition, they told of raging rapids, constant danger, and breathtaking...